In 1852 Robert Angus Smith published a detailed report of the chemistry of rain in a large area around the city of
A: that the closer one came to town, the more the city air would become increasingly acidic
B: that the city air became increasingly acidic the closer one came to town.
C: that coming closer to town, the city air became increasingly acidic
D: that the more the city air became increasingly acidic, the closer one was to town
E: the city air becoming increasingly acidic as one would come closer to town
A凑合,但好象也有问题,大家看看吧! 有没有知道是否最初的GWD不止13套,这题来自另外的一部分?
从选项上来看,偶选A,不过题干中的nothing是不是应该是noting?
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